Nothing Special   »   [go: up one dir, main page]

WO2011030891A1 - Système de communication mobile, station radio de base et station mobile - Google Patents

Système de communication mobile, station radio de base et station mobile Download PDF

Info

Publication number
WO2011030891A1
WO2011030891A1 PCT/JP2010/065723 JP2010065723W WO2011030891A1 WO 2011030891 A1 WO2011030891 A1 WO 2011030891A1 JP 2010065723 W JP2010065723 W JP 2010065723W WO 2011030891 A1 WO2011030891 A1 WO 2011030891A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile station
transmission power
radio base
offset value
base station
Prior art date
Application number
PCT/JP2010/065723
Other languages
English (en)
Japanese (ja)
Inventor
耕平 清嶋
尚人 大久保
啓之 石井
聖悟 原野
Original Assignee
株式会社エヌ・ティ・ティ・ドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社エヌ・ティ・ティ・ドコモ filed Critical 株式会社エヌ・ティ・ティ・ドコモ
Priority to US13/394,821 priority Critical patent/US20120208589A1/en
Publication of WO2011030891A1 publication Critical patent/WO2011030891A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control

Definitions

  • the mobile station UE calculates a path loss in the downlink channel based on a downlink reference signal (DL-RS: Downlink Reference Signal), and based on the calculated path loss.
  • DL-RS Downlink Reference Signal
  • Open-loop TPC Transmission Power Control
  • the mobile station UE controls the transmission power in the uplink channel based on the transmission power control command (TPC command) received from the radio base station eNB. It is configured to perform “loop TPC”.
  • the radio base station eNB performs scheduling processing for the mobile station UE (for example, determination of priority order and transmission bandwidth (resource block) assigned to the mobile station UE), In order to determine the target SIR, it is necessary to accurately know the path loss in the uplink channel.
  • the method for calculating the path loss in the uplink channel includes a method A in which the radio base station eNB calculates a path loss in the uplink channel based on the transmission power of the mobile station UE in the uplink channel and the reception power in the uplink channel, and the radio base station eNB There is a method B for calculating the path loss in the uplink channel based on the difference information between the maximum transmittable power received from the mobile station UE and the actual transmission power and the transmission power determination parameter.
  • the path loss calculated by the mobile station UE can be accurately known regardless of the uplink channel reception accuracy.
  • the transmission power determination parameter described above is assigned to the transmission power determination parameter common to the cell and the transmission power determination parameter for each mobile station UE (transmission power offset value unique to the mobile station UE and the mobile station UE).
  • the number of resource blocks, the offset value corresponding to the transmission format assigned to the mobile station UE, and the accumulated value of the TPC command) are included.
  • the present invention has been made in view of the above-described problem, and after the random access procedure, the accumulated value of the TPC command held by the radio base station eNB and the accumulated value of the TPC command held by the mobile station UE. It is an object of the present invention to provide a mobile communication system, a radio base station, and a mobile station that can match values and accurately calculate an uplink channel path loss.
  • a first feature of the present invention is a mobile communication system that performs communication via an uplink channel between a radio base station and a mobile station, wherein the radio base station has a maximum transmittable power in the mobile station, Path loss calculation configured to calculate a path loss in the uplink channel based on difference information between the maximum transmittable power received from the mobile station and actual transmission power and a cell common transmission power determination parameter And a transmission unit configured to transmit a mobile station-specific transmission power offset value by an individual message when a random access procedure is completed for the mobile station, the mobile station Is the number of resource blocks allocated to the mobile station, and the offset value corresponding to the transmission format allocated to the mobile station, The transmission power determination parameter common to the cells received from the radio base station and the transmission power offset value specific to the mobile station, the path loss in the downlink channel between the radio base station and the mobile station, and the radio base station A determination unit configured to determine transmission power in the uplink channel based on a cumulative value of the received transmission power control command, the transmission unit of the radio base station at the end of the
  • a second feature of the present invention is a radio base station configured to perform communication with an uplink channel with a mobile station, the maximum transmittable power in the mobile station, and the mobile station
  • a path loss calculating unit configured to calculate a path loss in the uplink channel based on difference information between the received maximum transmittable power and the actual transmission power, and a cell common transmission power determination parameter
  • a transmission unit configured to transmit a mobile station-specific transmission power offset value by an individual message when the random access procedure is completed for the mobile station, and the transmission unit includes a random access By transmitting a mobile station-specific transmission power offset value that is different from the previously transmitted mobile station-specific transmission power offset value at the end of the procedure, The accumulated value of the transmission power control commands at the mobile station and summarized in that is configured to be reset to "0".
  • a third feature of the present invention is a mobile station configured to perform communication via an uplink channel with a radio base station, the cell common transmission power determination parameter, the radio base station, A determination unit configured to determine transmission power in the uplink channel based on a path loss in the downlink channel with the mobile station and a cumulative value of a transmission power control command received from the radio base station; And the determination unit resets the accumulated value of the transmission power control command to “0” when receiving a transmission power offset specific to the mobile station that is different from the transmission power offset specific to the mobile station received last time.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 3 is a functional block diagram of a mobile station according to the first embodiment of the present invention. It is a figure which shows an example of the calculation method of the accumulated value of the TPC command by the mobile station which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the calculation method of the transmission power in PUSCH by the mobile station which concerns on the 1st Embodiment of this invention.
  • FIG. 3 is a functional block diagram of a radio base station according to the first embodiment of the present invention. It is a figure which shows an example of the calculation method of the path loss by the wireless base station which concerns on the 1st Embodiment of this invention.
  • FIG. 3 is a sequence diagram showing an operation of the mobile communication system according to the first embodiment of the present invention.
  • the mobile communication system according to the present embodiment is an LTE mobile communication system, and in the mobile communication system according to the present embodiment, the mobile station UE An uplink data signal is transmitted via an uplink channel PUSCH (Physical Uplink Shared Channel), and an uplink control signal is transmitted via an uplink channel PUCCH (Physical Uplink Control Channel).
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • the radio base station eNB transmits, to the mobile station UE, a TPC command, a cell-common transmission power determination parameter P 0_nominal_PUSCH , The transmission power offset value P 0_UE_PUSCH is transmitted.
  • the mobile station UE includes an RA procedure execution unit 11, a reception unit 12, a determination unit 13, and a transmission unit 14.
  • the RA procedure execution unit 11 generates an uplink signal to be transmitted when establishing communication by outgoing / incoming, when performing handover, or when uplink synchronization is lost between the radio base station eNB and the mobile station UE. In such a case, a random access procedure is executed with the radio base station eNB.
  • the RA procedure execution unit 11 is configured to increase the transmission power of the RA preamble little by little and retransmit it until a RA response is received from the radio base station eNB in the random access procedure.
  • the RA procedure execution unit 11 is configured to reset the variable f (i) according to the formula shown in FIG. 3 when the random access procedure is completed.
  • the receiving unit 12 is a downlink signal transmitted via a downlink channel by the radio base station eNB, specifically, a downlink data signal or a PDCCH (Physical Downlink Control Channel) transmitted via a PDSCH (Physical Downlink Shared Channel). Is configured to receive a downlink control signal transmitted via the.
  • a downlink data signal or a PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • the reception unit 12 receives a TPC command transmitted via the downlink channel by the radio base station eNB, a cell-common transmission power determination parameter P 0_nominal_PUSCH, and a transmission power offset value P 0_UE_PUSCH specific to the mobile station UE. It is configured.
  • the receiving unit 12 is configured to receive a mobile station-specific transmission power offset value P 0_UE_PUSCH from the radio base station eNB via the RRC message when the random access procedure is completed.
  • the determination unit 13 includes the number M PUSCH of resource blocks allocated to the mobile station UE, an offset value ⁇ TF (TF (i)) corresponding to the transmission format allocated to the mobile station UE, Cell common transmission power determination parameter P 0_nominal_PUSCH received from the radio base station eNB and transmission power offset value P 0_UE_PUSCH specific to the mobile station UE, and path loss PL in the downlink channel between the radio base station eNB and the mobile station UE, The transmission power P Tx in the PUSCH is determined based on a cell common coefficient ⁇ multiplied by the path loss and a variable f (i).
  • variable f (i) is a cumulative value of the TPC command received from the radio base station eNB.
  • the determination unit 13 increases the variable f (i) by “1” and receives the TPC command “ ⁇ 1” received from the radio base station eNB. May be configured to decrease the variable f (i) by “1”.
  • the determination unit 13 is configured to determine the transmission power P Tx in PUSCH according to the equation shown in FIG.
  • the transmission unit 14 is configured to transmit an uplink data signal to the radio base station eNB via PUSCH and to transmit an uplink control signal via PUCCH.
  • the transmission unit 14 is configured to periodically transmit “UPH (UE Power Headroom)” to the radio base station eNB.
  • UPH is difference information between the maximum transmittable power P TX MAX in the mobile station UE and the transmission power P Tx in the actual PUSCH in the mobile station UE.
  • the radio base station eNB includes a broadcast information transmission unit 21, an RA procedure execution unit 22, a transmission unit 23, a reception unit 24, and a path loss calculation unit 25.
  • the broadcast information transmission unit 21 is configured to transmit, as broadcast information, the above-described cell-common transmission power determination parameter P 0_nominal_PUSCH , a cell-common coefficient ⁇ that is multiplied by the path loss, and the like.
  • the RA procedure execution unit 22 generates an uplink signal to be transmitted when establishing communication by outgoing / incoming, when performing handover, or when uplink synchronization is lost between the radio base station eNB and the mobile station UE.
  • the mobile station UE is configured to execute a random access procedure.
  • the transmission unit 23 is configured to transmit a downlink data signal to the mobile station UE via the PDSCH and transmit a downlink control signal via the PDCCH.
  • the transmission unit 23 is configured to transmit an RRC message to the mobile station UE connected to the radio base station eNB.
  • the transmission unit 23 is configured to transmit, to the mobile station UE, a transmission power offset value P 0_UE_PUSCH specific to the mobile station UE by an RRC message when the random access procedure is completed.
  • the transmission unit 23, at the end of the random access procedure, to send the mobile station UE-specific transmission power offset value P 0_UE_PUSCH a different value from the mobile station UE-specific transmission power offset value P 0_UE_PUSCH previously transmitted It is configured.
  • transmitter 23 alternating with the mobile station UE-specific transmission power offset value P 0_UE_PUSCH set to "0" set the mobile station UE-specific transmission power offset values are P 0_UE_PUSCH to the "1" It may be configured to transmit.
  • the transmission unit 23 is configured to transmit scheduling information (for example, resource information such as the number of resource blocks allocated to the mobile station UE) to the mobile station UE via the PDCCH.
  • scheduling information for example, resource information such as the number of resource blocks allocated to the mobile station UE
  • the receiving unit 24 receives an uplink signal transmitted via the uplink channel by the mobile station UE, specifically, an uplink data signal transmitted via the PUSCH and an uplink control signal transmitted via the PUCCH. It is configured.
  • the receiving unit 24 is configured to receive UPH periodically transmitted via the uplink channel by the mobile station UE.
  • the path loss calculating unit 25 is allocated to the mobile station UE, the maximum transmittable power P TX MAX in the mobile station UE, the difference information UPH between the maximum transmittable power received from the mobile station UE and the actual transmit power, and The number of resource blocks MPUSSCH, the offset value ⁇ TF (TF (i)) corresponding to the transmission format assigned to the mobile station UE, the cell common transmission power determination parameter P 0_nominal_PUSCH, and the path loss are multiplied.
  • the path loss PL in the PUSCH is calculated based on the cell common coefficient ⁇ .
  • the path loss calculation unit 25 may be configured to calculate the path loss PL in the PUSCH according to the formula shown in FIG.
  • the path loss calculation unit 25 performs the random access procedure.
  • the accumulated TPC command value f (i) at the time when is finished cannot be grasped.
  • the transmitting unit 23 when the random access procedure is completed, transmits the mobile station UE-specific transmission power offset value P 0_UE_PUSCH a different value from the mobile station UE-specific transmission power offset value P 0_UE_PUSCH previously transmitted
  • the cumulative value f (i) of the TPC command held by the mobile station UE is reset to “0”.
  • the determination unit 23 can calculate the path loss PL in the PUSCH assuming that the accumulated value f (i) of the TPC command in the equation shown in FIG. 6 is “0”. .
  • step S1001 the mobile station UE transmits an RA preamble with an RA preamble initial transmission power to the radio base station eNB, but the RA preamble does not reach the radio base station eNB.
  • step S1002 the mobile station UE transmits an RA preamble to the radio base station eNB with a transmission power further increased by ⁇ ramup, step, but the RA preamble does not reach the radio base station eNB.
  • ⁇ ramup and step are power ramping step values at the time of retransmission of the RA preamble, and are notified from the radio base station eNB to the mobile station UE as broadcast information.
  • step S1003 when the mobile station UE transmits the RA preamble to the radio base station eNB with the transmission power further increased by ⁇ ramup, step, the RA preamble reaches the radio base station eNB.
  • step S1004 the radio base station eNB transmits an RA response including the TA command ⁇ msg2 to the mobile station UE.
  • step S1006 the radio base station eNB transmits a transmission power offset value P 0_UE_PUSCH specific to the mobile station UE set to “0” to the mobile station UE.
  • step S1007 when the mobile station UE receives the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE set to “0”, the mobile station UE resets the TPC command accumulated value f (i) to “0”.
  • step S1008 the mobile station UE receives the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE set to “0” from the radio base station eNB.
  • the mobile station UE determines that it has received the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE that is the same value as the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE transmitted last time, and the TPC command accumulated value Assume that f (i) is not reset.
  • step S1009 when the mobile station UE transmits an RA preamble with the RA preamble initial transmission power to the radio base station eNB, the RA preamble reaches the radio base station eNB.
  • ⁇ Prumup 0
  • step S1012 the radio base station eNB transmits a transmission power offset value P 0_UE_PUSCH specific to the mobile station UE set to “1” to the mobile station UE.
  • step S1007 when the mobile station UE receives the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE set to “1”, the mobile station UE is different from the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE transmitted last time. It is determined that the transmission power offset value P0_UE_PUSCH specific to the mobile station UE, which is a value, is received, and the TPC command accumulated value f (i) is reset to “0”.
  • the radio base station eNB can accurately calculate the path loss in the uplink channel even after the random access procedure.
  • the radio base station eNB resets the accumulated value f (i) of the TPC command in the mobile station UE to “0” when the random access procedure is completed. Therefore, it is possible to avoid a problem that the value of the accumulated value f (i) of the TPC command in the mobile station UE cannot be grasped.
  • the path loss calculation unit 25 of the radio base station eNB may be configured to calculate the path loss in the PUCCH by the same method as the path loss in the PUSCH.
  • a first feature of the present embodiment is a mobile communication system that performs communication via a PUSCH (uplink channel) between a radio base station eNB and a mobile station UE.
  • the radio base station eNB Maximum transmittable power P TX MAX , difference information UPH between the maximum transmittable power received from the mobile station UE and the actual transmit power, the number of resource blocks allocated to the mobile station UE MPUSCH, and the mobile station Based on the offset value ⁇ TF (TF (i)) corresponding to the transmission format assigned to the UE and the cell common transmission power determination parameter P 0_nominal_PUSCH , the path loss PL in the PUSCH is calculated.
  • a mobile station UE-specific transmission power offset value transmission unit 23 configured to transmit the P 0_UE_PUSCH, the mobile station UE is assigned to the mobile station UE The number of resource blocks MPUSCH, the offset value ⁇ TF (TF (i)) corresponding to the transmission format assigned to the mobile station UE, the cell common transmission power determination parameter P 0 — nominal_PUSCH received from the radio base station eNB, and the movement Based on the transmission power offset value P0_UE_PUSCH specific to the station UE, the path loss PL in the downlink channel between the radio base station eNB and the mobile station UE, and the accumulated value f (i) of the TPC command received from the radio base station eNB , Determine transmission power P Tx in PUSCH
  • the transmission unit 23 of the radio base station eNB includes a value different from the transmission power offset value P 0_UE_PUSCH specific to the previously
  • the mobile station UE is configured to transmit a transmission power offset value P 0_UE_PUSCH specific to the mobile station UE, and the determination unit 13 of the mobile station UE includes a value that is different from the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE received last time.
  • the gist is that when the transmission power offset value P 0_UE_PUSCH unique to the station UE is received, the accumulated value f (i) of the TPC command is reset to “0”.
  • the path loss calculation unit 25 of the radio base station eNB is further configured to calculate the path loss PL in the PUSCH based on the transmission power offset P 0_UE_PUSCH specific to the mobile station UE. Also good.
  • the second feature of the present embodiment is a radio base station eNB configured to perform communication with the mobile station UE via PUSCH, and the maximum transmittable power P TX MAX in the mobile station UE and The difference information UPH between the maximum transmittable power received from the mobile station UE and the actual transmission power, the number of resource blocks MPUSCH allocated to the mobile station UE, and the mobile station UE
  • a path loss calculation unit 25 configured to calculate a path loss PL in the PUSCH based on the offset value ⁇ TF (TF (i)) corresponding to the transmission format and the cell-common transmission power determination parameter P 0_nominal_PUSCH ;
  • an RRC message indicates the mobile station specific
  • a transmitter unit 23 configured to transmit the transmission power offset value P 0_UE_PUSCH, transmitter 23, at the end of the random access procedure, the mobile station UE-specific transmission power offset value P 0_UE_PUSCH previously transmitted It is configured to reset the accumulated value f (i) of the TPC command
  • the path loss calculation unit 25 may be further configured to calculate the path loss PL in the PUSCH based on the transmission power offset value P 0_UE_PUSCH specific to the mobile station UE.
  • a third feature of the present embodiment is a mobile station UE configured to communicate with a radio base station eNB via PUSCH, and is a resource block allocated to the mobile station UE , The offset value ⁇ TF (TF (i)) corresponding to the transmission format assigned to the mobile station UE, the cell common transmission power determination parameter P 0_nominal_PUSCH received from the radio base station eNB, and the movement Based on the transmission power offset value P 0_UE_PUSCH specific to the station UE, the path loss PL in the downlink channel between the radio base station eNB and the mobile station UE, and the accumulated value f (i) of the TPC command received from the radio base station eNB And a determination unit 13 configured to determine transmission power PTx in the PUSCH.
  • Determination unit 13 when receiving the mobile station UE-specific transmission power offset value P 0_UE_PUSCH contain different values and the mobile station UE-specific transmission power offset value P 0_UE_PUSCH previously received, the variable f (i) to "0"
  • the gist of the invention is that it is configured to be reset.
  • radio base station eNB and the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. .
  • Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
  • Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base station eNB or the mobile station UE. Further, the storage medium and the processor may be provided as a discrete component in the radio base station eNB or the mobile station UE.
  • the accumulated value of the TPC command held by the radio base station eNB is matched with the accumulated value of the TPC command held by the mobile station UE, It is possible to provide a mobile communication system, a radio base station, and a mobile station that can accurately calculate an uplink channel path loss.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Une station radio de base (eNB) comprend : une unité de calcul de perte de trajet (25) pour calculer une perte de trajet (PL) dans un PUSCH sur la base de la puissance d'émission maximum possible PTXMAX, UPH, du nombre de blocs de ressources MPUSCH, d'une valeur de décalage ΔTF(TF(i)), qui correspond à un format d'émission, et d'un paramètre de décision de puissance d'émission P0_nominal_PUSCH qui est commun aux cellules; et une unité d'émission (23) pour émettre, vers une station mobile (UE), une valeur de décalage de puissance d'émission P0_UE_PUSCH qui est propre à la station mobile, à l'aide d'un message RRC lorsqu'une procédure d'accès aléatoire se termine. A la fin de la procédure d'accès aléatoire, l'unité d'émission (23) émet la valeur de décalage de puissance d'émission P0_UE_PUSCH qui est propre à la station mobile et qui comprend une valeur différente de la valeur de décalage de puissance d'émission P0_UE_PUSCH émise précédemment qui est propre à la station mobile.
PCT/JP2010/065723 2009-09-14 2010-09-13 Système de communication mobile, station radio de base et station mobile WO2011030891A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/394,821 US20120208589A1 (en) 2009-09-14 2010-09-13 Mobile communication system, radio base station, and mobile station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009212002A JP5106500B2 (ja) 2009-09-14 2009-09-14 移動通信システム、無線基地局及び移動局
JP2009-212002 2009-09-14

Publications (1)

Publication Number Publication Date
WO2011030891A1 true WO2011030891A1 (fr) 2011-03-17

Family

ID=43732553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/065723 WO2011030891A1 (fr) 2009-09-14 2010-09-13 Système de communication mobile, station radio de base et station mobile

Country Status (3)

Country Link
US (1) US20120208589A1 (fr)
JP (1) JP5106500B2 (fr)
WO (1) WO2011030891A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107432038A (zh) * 2015-07-07 2017-12-01 索尼公司 通信装置和通信方法
US11595904B2 (en) * 2017-07-12 2023-02-28 Ntt Docomo, Inc. User terminal and radio communication method

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9420543B2 (en) * 2010-12-10 2016-08-16 Qualcomm Incorporated Control of transmission power on high-speed dedicated physical control channel
JP2013034111A (ja) 2011-08-02 2013-02-14 Sharp Corp 基地局、端末、通信システムおよび通信方法
JP5927802B2 (ja) * 2011-08-02 2016-06-01 シャープ株式会社 基地局、端末および通信方法
JP5927801B2 (ja) * 2011-08-02 2016-06-01 シャープ株式会社 基地局、端末および通信方法
EP2763471B1 (fr) * 2011-09-30 2018-07-04 Sharp Kabushiki Kaisha Terminal et procédé de communication
US9681397B2 (en) * 2012-03-27 2017-06-13 Qualcomm Incorporated Format dependent power control for coordinated multipoint transmission
JP6014421B2 (ja) 2012-08-30 2016-10-25 株式会社Ｎｔｔドコモ 基地局及び送信電力制御方法
JP6211845B2 (ja) * 2013-07-31 2017-10-11 株式会社Ｎｔｔドコモ 移動局及び移動通信システム
US9832792B2 (en) * 2015-04-30 2017-11-28 Intel IP Corporation Apparatus, computer readable medium, and method for pre-association frame exchange using random access in a high efficiency wireless local-area network
CN107710843B (zh) 2015-06-24 2022-01-04 株式会社Ntt都科摩 用户装置、基站以及通信方法
US10925005B2 (en) * 2016-03-25 2021-02-16 Apple Inc. Uplink power control for 5G systems
US11202263B2 (en) * 2017-05-12 2021-12-14 Ntt Docomo, Inc. User terminal and radio communication method
BR112019021143A2 (pt) 2018-01-19 2020-05-12 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Método de controle de potência, e dispositivo terminal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008108228A1 (fr) * 2007-03-01 2008-09-12 Ntt Docomo, Inc. Dispositif station de base et procédé de commande d'une communication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009060303A2 (fr) * 2007-11-09 2009-05-14 Nortel Networks Limited COMMANDE DE PUISSANCE EN LIAISON MONTANTE AVEC COMMANDE D'INTERFÉRENCE SUR NIVEAU DE BRUIT THERMIQUE (IoT)
US8718694B2 (en) * 2007-12-07 2014-05-06 Interdigital Patent Holdings, Inc. Method and apparatus of signaling and procedure to support uplink power level determination
JP2009206855A (ja) * 2008-02-28 2009-09-10 Fujitsu Ltd 無線通信システム
US8494572B2 (en) * 2008-06-24 2013-07-23 Qualcomm Incorporated Method and apparatus for power control of first data transmission in random access procedure of FDMA communication system
US8688163B2 (en) * 2009-12-30 2014-04-01 Qualcomm Incorporated Interaction between accumulative power control and minimum/maximum transmit power in LTE systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008108228A1 (fr) * 2007-03-01 2008-09-12 Ntt Docomo, Inc. Dispositif station de base et procédé de commande d'une communication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 8)", 3GPP TS 36.213 V8.7.0 (2009-05), May 2009 (2009-05-01), pages 9 - 18 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107432038A (zh) * 2015-07-07 2017-12-01 索尼公司 通信装置和通信方法
CN107432038B (zh) * 2015-07-07 2021-08-03 索尼公司 通信装置和通信方法
US11595904B2 (en) * 2017-07-12 2023-02-28 Ntt Docomo, Inc. User terminal and radio communication method
IL271936B1 (en) * 2017-07-12 2023-10-01 Ntt Docomo Inc User terminal unit and radio communication method
IL271936B2 (en) * 2017-07-12 2024-02-01 Ntt Docomo Inc User terminal unit and radio communication method

Also Published As

Publication number Publication date
US20120208589A1 (en) 2012-08-16
JP2011061706A (ja) 2011-03-24
JP5106500B2 (ja) 2012-12-26

Similar Documents

Publication Publication Date Title
JP5106500B2 (ja) 移動通信システム、無線基地局及び移動局
US9736786B2 (en) Wireless communication system, base station apparatus, mobile station apparatus, wireless communication method, and integrated circuit
KR102006088B1 (ko) 이중 연결에서의 pcmax 도출
EP2747495B1 (fr) Procédé de compensation, station de base et équipement d'utilisateur pour réguler la puissance sur la liaison montante dans un système comp
US9814002B2 (en) Apparatus and method for controlling transmission power in wireless communication system
US20200112922A1 (en) Method for terminal to transmit uplink signal, and terminal
ES2622910T3 (es) Control de potencia de enlace ascendente para terminales de potencia limitada
JP5980241B2 (ja) ユーザ端末、無線基地局及び無線通信方法
EP3284291B1 (fr) Commande de puissance dans un réseau sans fil
JP4944254B2 (ja) 通信ネットワークにおけるランダムアクセス送信電力制御のための方法およびデバイス
CN102811478A (zh) 一种路损补偿方法和基站及用户设备
JP6437655B2 (ja) アップリンク送信パワー制御方法及び装置
CN110832914B (zh) 上行功率控制方法及装置
WO2011136351A1 (fr) Procédé de communications mobiles et station mobile
CN106465285B (zh) 无线通信系统中传输功率控制方法及装置
US20150141070A1 (en) Mobile station and method of determining transmission power
WO2012056859A1 (fr) Système de communication mobile, station de base et procédé de commande de puissance d'émission
EP2232723A1 (fr) Système et procédé pour reprendre une régulation de puissance après interruption
US9185661B2 (en) Performing power control based on nominal packet size
JP6037963B2 (ja) 基地局装置、移動局装置、無線通信方法および集積回路

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10815481

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2423/CHENP/2012

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 13394821

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 10815481

Country of ref document: EP

Kind code of ref document: A1